Questions Bank

November 5, 2022 Comments Off on Questions Bank

Questions Bank › Category: JavaScript Essentials 1
We have declared an array of selected month names let summer = [ “June”, “July”, “August”];. We want to change the value “July” stored in the array to the number 7:
OpenProgrammingAnswers asked 2 years ago • 
Analyze the following code: let height = 180; { let heigh = 200; height = height + 10; } console.log(height); As a result of its execution:
OpenProgrammingAnswers asked 2 years ago • 
We need to come up with a name for a variable where we will store the age of a user. All of the following variable names are formally correct, but one of them is the most readable, indicate which one:
OpenProgrammingAnswers asked 2 years ago • 
We have declared an array of animals let animals = [“dog”, “cat”, “hamster”];. Then we call the method animals.push(“canary”);. As a result, the animals array will look like this:
OpenProgrammingAnswers asked 2 years ago • 
Complex (or composite) data types:
OpenProgrammingAnswers asked 2 years ago • 
Review the following code (note the variable name): let age = 32; age = age + 1; console.log(Age); As a result of its execution, the following should appear in the console:
OpenProgrammingAnswers asked 2 years ago • 
Analyze the following code: let counter = 100; let counter = 200; counter = 300; As a result of its execution:
OpenProgrammingAnswers asked 2 years ago • 
Performing the operation: let x = 100 / 0; will result in:
OpenProgrammingAnswers asked 2 years ago • 
The msg variable contains a String type value. Information about the number of characters of this string can be obtained using:
OpenProgrammingAnswers asked 2 years ago • 
Analyze the code snippet: let summer = [“June”, “July”, “August”]; let index = summer.indexOf(“June”); The index variable will have the value:
OpenProgrammingAnswers asked 2 years ago • 
Performing the operation: let x = “Alice” + 10; will result in:
OpenProgrammingAnswers asked 2 years ago • 
Analyze the code snippet: let name; let age; { let height;// 2 {// 2 let weight;// 1// 2 console.log(name);// 1// 2 }// 2 console.log(name);// 2 } We have access to the weight variable:
OpenProgrammingAnswers asked 2 years ago • 
What tag do we use in HTML to denote the main part of the document inside which we define the page elements?
OpenProgrammingAnswers asked 2 years ago • 
The JavaScript code includes the console.log(“http://test.org”); command. Its execution will:
OpenProgrammingAnswers asked 2 years ago • 
HTML is:
OpenProgrammingAnswers asked 2 years ago • 
« Previous1…6789Next »
Ask Question
© Copyright 2024, All Rights Reserved